Disclosed is a catalyst for a partial oxidation reforming reaction of fuel in the form of disk having through-hole. First buffer circuits of the first semiconductor chip are identical with second buffer circuits of the second semiconductor chip at least in design. The volume-filling structure further includes an activation mechanism regulating expansion of the open celled material from the non-expanded state to expanded state in response to an activation signal, and the activation mechanism includes an actuator interfaced with the end caps. The method is useful to determine sugar levels in a human being. When switching off the engine, a relief of load of the compressing device is initiated in addition to the reduction of the metering of fuel.